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W. .L. MARTIN APPARATUS FOR THERAPEUTIC AND OTHER PURPOSES May 17, 1932.

Filed Jan. 8, 1932 2 Sheds-Sheet" 1 7 O I ln HI III, z N 7 WW fiT J w L N W U 1 l w WM 41d ML H= m MM T 5 7 7.

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SAT I 03 was y 1932. w. L. MARTIN 5%1-58314' ,APPARATUS FOR THERAPEUTIC AINVID OTHERPPURPOSES Fil ed Jan, 8, 1952 2 Sheets-Sheet 2 ZEN-vs. yr-Q Arr TOR Nzila Patented May 17,- 1932 UNITED sT rEs PATENT ounce WENDELL L. MARTIN, OF CLEVELAND, OHIO, ASSIGNOR TO THE MARTIN BROTHEBST ELECTRIC COMPANY, OF CLEVELAND, OHIO, A CORPORATION QHIO APPARATUS FORTHERAPEUTIC AND OTHER PURPOSES Application filed; January,8,. 1932. Serial. No. 585,482.

My invention relates to apparatus for therapeutic and other purposes, a dhas particular reference to apparatus for use in steaming hair, or in drying hair or the hands or the like, and the principal object of my invention is to provide a new and improved apparatus ofthis type. This application is a continuation in part of my copending applications S. N. 352,429 and S."N. 509,132.

In the drawings accompanying this specification, and forming a part of this application, I have shown, for purposes of illustration, one form which my invention may assume, and in these drawings:

Figure 1 is a side elevation of the embodiment herein illustrated,

Figure 2 is a front elevation of this em bodiment,

Figure 3 is a horizontal section taken on the lines 33 of Figures land 2,

line 4-4 of Figure 3, and with parts omitted for clarity, while Figure 5 is a diagram to show the electrical connections. The embodiment of my invention herein shown comprises a supporting ring 11 carrying within itself an electric motor 12 secured thereto by machine screws 13 passing through apertures 14 in the supporting ring 11 and seating in'cooperating screw-threaded apertures 15 in the rear end of the frame 16 of the motor 12, while secured to the front end of the motor frame 16 by-means of ma.-

outer periphery with a bead 23- forming an abutment for a shell 24 extending-between a bead 92 on the supporting ring 11 and the head 23 on the face plate 22 and embracing annular lips 25 and 26 formed respectively on the supporting ring 11 and the face plate 22. I

The face plate 22 comprises also a relatively broad annular band 27 to which the Figure 4 is a vertical section taken on the chine screws 17 is a deflector 18extending ring 21 and bead 23 are connected by means of bars 28 forming with the ring 21 an annular-grid consisting of an outer row of aper'-' tures 29 communicating with the'spa'cing between the deflector 18 and the shell 24, and an inner row of apertures 30 communicating with the spacing Just within the deflector 18. Extending inwardly from the band 27 are further ribs 31 crossing an inner ring 32 to I reach a center 33 and forming with the ring 32 and within the band 27 a second grid comprising two annular rows of apertures 34 both communicating with the center of the spacing within the deflector 18..

The apertures 29 provide a first outlet means, and the apertures 30 a second outlet means, while vthe apertures 34 provide an in let means, and accordingly the apertures 29' and 30 and 34provide two outlet means and one inlet means, each annula'rly arranged, 6

but in the embodiment herein disclosed each interrupted over the central pdrtion of the annular area, the inlet means b thecenter 33 lying inside the annular boun ing periphery of the apertures 34 and spaced therefrom, and the second outlet means by the center 33 and apertures 34 and band. 27, all lying inside the annular boundingperiphery of the i apertures 30 and spaced therefrom, and the first outlet means by the center 33 andaper tures 34 and band 27 and apertures 30 and ring 21, all lying inside the annular bounding peripheryof the apertures 29 and spaced therefrom, so that in the embodiment herein disclosed eachannularly arranged outlet or inlet means is not the full area-within the periphery of the annulus, but arcuate. Positionedacross all of theapertures affording access to the interior ofthe deflector 18 is a screen 35 effective to prevent insertion of any partof a body into the space within comprising a coiled resistance wire'39 supvirtue o ported from the deflector 18 intermediate its 7 ends by eyes insulated from the deflector 18 by insulatin bushings 41 and at its ends by terminal bolts 42 and 43 insulated from the deflector by insulating bushings 44.

Mounted on the shaft 45 of the motor 12 is a double centrifugal fair 46, the'front part 47 formed to draw in air through the aperturing 34 of the face plate 22, force such aircentrifu ally against the deflector 18, and, by E the shape of the deflector 18, expel such air through the aperturing 30 of the face plate 22 in the general direction of the axis of the fan 46 andmotor 12 and swirling to a marked degree, and a second part, 48

.acting to draw air in through the motor 12 thus to prevent overheating of the motor 12,

. and then to introduce this air into the current set up by the first part 47. Of course the aircurrent fromthe fan 46 passes over and is heated by the heating element 38, provided that element is'energized, and consequently' may be caused to emerge from the aperturing 30 warmed to a desired tempera-- ture. Furthermore the air emerging from the aperturing 30 creates an: eddy which draws in air through the outermost aperturing 29 and thussets up a flow of air through the annular spacing 49between the deflector 18 and the shell 24 which when the heating 7 element 38 is functioning absorbs heat from the deflector 18 to prevent overheating of the.

deflector 18 or objectionable heating of the shell This air therefore reaches the aperturing 29 already heated, so that the co-min-' glmg thereof with the air current from the aperturing 30 will not appreciably reduce the temperature of the total air current.

. The supporting ring 11 is rovided with a bracket 50 connected throug an adjustable hinge 51 to the adjustable upper section 52 of a pedestal 53.

Thc device herein illustrated also comrises an electric steam generator 75 mounted in a. bracket 7 6 which also supports a reser- \voir 77 and which is supported on the adjustable section 52 of thepedestal 53L Extending from the electric steam gen erator 75 is a duct 78 for conducting steam from the generator 75 into the space 79 within the deflector 18, the duct 78 terminating in an openend 80 positioned just-forwardly of the center of the fan 46. Condensation is returned tothe reservoir 77 by means of av application 509,132, and the flow of steam through the duct 78 may be controlled by a three-way valve 85 connecting the generator either to the s ace 7 9 or to atmosphere current from the rear of the fan, both uniting beyond the peripher of the fan. Also that this current will be eflected by the deflector 1 18, and will emerge from the outlet aperturing 30, and will emerge swirling. It also will be obvious that this current Wlll en rain air from the outlet opening 29, to set up a current of air through t e space 49 between'the flector 18 and the shell 24. v

The air flowing through the space 49 enters the shell 24 through apertures 87 in the frame 11, while the air moved b the rear fan section' 48 enters through't e frame aperture 88 and reaches the fan section 48 through the motor 12. -The air moved by the front fan section 47 enters through theinlet openings 34, and by reason of the proximity of the-out- .let openings 30, andof the nature of the outlet stream, entrains and includes a' considerable portion of the outlet stream.

The device therefor is constructed to subject-a body placedbefore the front 22'to the action of a current of fluid which is in part recirculated.

At the same time the device is also ada ted to treat thefluid, either b heating the aid,

by means of the heating e ement 38, or "by injecting vaporinto the fluid, by means of the:

generator 75, or by injecting vapor-and heating, by employing both the generator 75 and the heating element 38, and therefore is operable for subjectin to the action of an un-.

treated stream of fluid, or of a treated stream of fluid, as may be desired.

And the treatment of course ma than the heat and vapor herein disc osed.

The operation may be controlled conveniently by a switch. 54 mounted on the bracket 5.0 and arranged to energize the motor 12 1 be other either with or without energization of either or bothof the heating element 38 and the generator 75, thus to provide a current of air of either normal or raised temperature, and 7 either without or with vapor. I

When the device is to be employed for drying hair a variable ai-iflstream is desirable,

and accordingly the; embodiment herein shown comprises also a rheostat 98 connected in circuit with the motor 12, mounted on the shell 24 with its" handle 93 projecting through the shell 24 readily accessible exteriorly of the shell 24. The rheostat 98, however, is

disposed genera-ll within theshell 24, pro-- tectcd by the shel 24, and in the air current flowing through'the space 49 between-the shell 24 and the deflector '18, whereby the heat from the rheostat 98 servesto heat the air flowingl'through the space 49 and at the same time t e air flowing through the space 49 iao serves to maintain the rheostat 98 against 7 element 38, so that its heat serves to additionally heat the main air current and at the same time'the main air current serves to pre vent overheating of the resistance 94, while the switch 95 is mounted on the bracket aliove the switch 54. i

Under these circumstancesl find it convenient to connect the partsas shown in'Fig ure 5, wherein afirst line conductor 61 is connected to the arm 66 of the control switch 54-. The switch is provided with a contact arm (36 adapted in its first position to engage only a contact bar 67 connected by a conductor 68 to the motor 12, to energize only the motor 12,

but in its second position to engage both the contact bar 67 and also a contact bar 69 connected by a bridge 70 to a contact bar 71 and then by a conductor 72 to the heating element 38, to energize both the motor 19 and the heating element 38. In a third POSltlOll the, contact arm 66 engages-both the contact bar 67 and also a contact bar 73 connected by a conductor 74 to the steamer 75, thus to fourth to a stream of heated vapor laden fluid. With air as the fluid, in the first posi- 'tion the device operates as a cold drier, in the second as a hot drier, in the third, with steam as the vapor, as a relatively cold steamer, and'in the fourth, as a hot steamer. lVith other fiuid,'and/or with other treatment, the eifcct of'course would be different, depending on the other fluid'and/or treatment.

Theva-lve 85 is provided merely to insure against inflow of vapor when it is desired to use the device as a drier just after'it has been used as a steamer, and the vent 86 is provided to afford relief if the valve 85 is turned while the generator 75 is energized.

The heating element '38 is connected to the return line conductor by a conductor 62,- and the generator 75 by a-conductor 63, while the motor 12 is connected by a conductor 64 l to the rheostat 98, and the rheostatlid-isconnected by a forked conductor-89 to the resistance 94 and switch 95 in parallel, and the rc- I sistance 94 and switch 95 are connected bya forked conductor 90 to the return line 65.

' Under these circumstancesitbecomcs obvious that by means of the switch 95 the, device may be operated under the same conditions on either direct currentor alternating current, and that by means of the rheostat 98 the speed of-the motor maybe varied, thus to vary the volume and speed of the fluid stream.

From the construction of the device it will be apparent that at all times there will be some recirculation of air, that is some of the air drawn in by the primary fan'47 through the central aperturing 34 will. be air which has just been expelled by the fan through the intermediate aperturing 30; when the device is actually in use, however, that is when a body as a persons head or hands are adjacent the face plate 22, this recirculation will be greatly increased, in many cases to an extent where more than half of the air drawn in by the primary fan is recirculatory.

Obviously this recirculation of air greatly reduces the total treatment required foljthc circulated fluid, whether from the heating element 38, or from the generator 75, or from both,or from any other treating means, or from any combination oftreating means, and

constitutes an advantage'of the device herein disclosed. I

Under all these circumstances, it will be obvious to those skilled inthe art that the embodiment of my invention herein shown and described accomplishes at least the principal object of my invention. At the same time it also will be apparent that this particular embodiment may be put to other -uses,

and-may be variously changedand modified all without departing from the spirit of my invention,' or sacrificing the advantages thereof, and accordingly it will be understood that the disclosure herein-is illustrative only, and that my invention is'notlimited thereto. i

I claim:

1. A drier, comprising: a casing provided with an inlet and with an outlet; a circulator for drawing a. stream of air in through said inlet and expelling suchair through said out let; a heater for heating such air; and a shell surrounding said casing,'but spaced therefrom, and with said casing defining a passage opening into the stream of such air, 1 whereby additional air is drawn" through betweenisaid casing and said shell into said stream, absorbing heat from said casing to maintain said casing againstoverheating and joining said stream only when at least partially heated.

2. A drier, comprising: a casing provided with an inlet and with an outlet; a circulator for drawing a stream of air in through said tric motor for operating said circulator; ashell surrounding sa d casing, but spaced inlet and expellin such air through said outlet; a heater for eating such air; an electherefrom, and-opening into the stream of such air, whereby additional .air isdrawn through between said casing and said shell into said stream, absorbing heat from said casing to maintain said casing against overheating, and joining said stream only when at, least partially heated; and a resistance, connected m the circuit of said motor, located in the path' of such additional air, serving to addi- 'tionally hea't such additional air, and maintained by such additional air against overheating.' j- 3. A drier, comprising; a casing provided -.with an inlet and with an outlet; a circulat'or for drawing a stream of air in through said inlet and expelling such air through said outlet; a heater for, heating such air; a universal electric motor'for operating said circulator; a shell surrounding said casing, but spaced therefrom, and opening into the stream of such air, whereby additional air is drawn through between said casing and said shell into said stream, absorbing heat from said casing to maintain said casing against overheating, and joining said stream only when at least partially heated; a resistance unit, for inserting a resistance into circuit with said motor when said motor is operated on direct current, having its resistance located in said stream of air to additionallyheat the air of said stream and at the same time beheld thereby against overheating; and a rheostat, for controlling 'the speed of said motor, havin its resistance locatedin the path of such a ditional air to additional ly heat such additional air-and atthe same time be held thereby against overheating.

4. A recirculating drier com arising: a

' casing havinglan inlet through w ichair isdrawn, and anoutletthrough which air is expelled, said inlet and outlet being arranged in juxtaposition; means;- carried by said casing for drawing a stream of exterior air and at least some of the air asexpelled from said outletinwardly into said casing and redirecting at least some of the same air.

of said stream outwardly .and expelling it from said outlet; a heater [for heating such air; and .a shell-surroundin said casing, but spaced therefrom, and de'ning a-passage opening into the stream of such air, whereby additional exterior air is drawn between from said casing to maintain said casing said casing and said shell, absorbing heat against overheating, and joining said stream only when at least partially heated.

5. A recirculating drier comprising: a casing having annularly arranged inlet means through which air is drawn, and annu ilarly arranged Outlet means through which" 65.

air is expelled, said inlet and outlet annular means being (if different sizes and both providing passage for air through within the compass of the larger annar means;

.means carried by said-casing for drawing a'- streamof exterior air and at ast some of the air as expelled from said outlet inwardly into said casing and redirecting at least some of the same air of said stream outwardly and expelling it from saidoutlet; a heater for heating such air;'and a shell surrounding said casing, but spaced therefrom, and defining a passage opening into the stream of means through which air is drawn, and annularly arranged outlet means throughwhich air is'expelleii, said inlet and outlet annular means being of different sizes, and both providing'passage forair through and within the compass of the outer annular means, said outlet means being arranged exteriorly of said inlet means; means carried by said casing for drawing a stream of ex terior air and at least some of the air as expelled from saidoutlet inwardlyinto said" casing and redirecting at least some of the same air of said stream outwardly and expelhng it from said outlet; a heater for heat- .ing such air; and a shell surrounding said casing, but spaced'therefrom, and 'definin a passage opening into the stream of suc air, whereby additional exterior air is drawn between said casing and said shell, absorbing heat from said casing to maintainsaid casing against overheating, and joining said stream only when at least partially heated. 1

-7. A recirculating drier comprising: a casing having annularly 1 arranged inlet means through which air is drawn, and annularly arranged outlet means through which air is expelled, said inlet and outletannular' means being of different sizes and both providing passage for air through and withinv thecompass of the larger annular means; means carrled by said casing for drawm .a stream of exterior air and at least some 0 the air as expelled from said outlet inwardly into said casing andredirecting at least some ofthesame air of said stream outwardly and expelling it from said outlet; a heater located in said outlet means for heating such air; and a shell surrounding said casingybut spaced therefrom, and defining a passage openin into the stream of such air, whereby additional exterior air is drawn between said casing and said shell, absorbing heat from said casing to maintain saidcasing against overheating, and joining said stream only when at least partially heated.

, 8. A recirculating drier comprising: a casing havmg annularly arranged inlet means through which air is drawn, and an-.

nularly arranged outlet means through which air is expelled, said inlet and outlet annular means being of different sizes, and both providing passage for air through and within the compass of the outlet means; said outlet means being disposed exteriorly of said inlet means; means carried by said casing for drawing a stream of exterior air and at least some of the air as expelled from said outlet inwardly, into said casing and redirectingat least some of the same air of said stream outwardly and expelling it from said outlet; a heater located in said outlet means for heating such air; and a shell surrounding said casing, but spaced therefrom, and

defining a passage opening into thestream of such air, whereby additionalexterior air is drawn between said casing and said shell,

I absorbing heat from said casing to maintain sa dcasmg against-overheating, and olnmg said stream only when at least partially heated.

9. A recirculatingdrier comprising: a casing having annularly arranged inlet means through which air is drawn, and annularly arranged outlet means through which air is expelled, said inlet and outlet annular means being arranged in juxtaposition; a centrifugal fan for drawing a stream of exterior air and at least some of the air as expelled from said outlet inwardly into said casing and said casing being formed for redirecting at least some of the same air ofsaid stream I outwardly and in. a direction substantially parallel with the axis of said fan and expelling it from said outlet; a heater for heating such air; and a shell surrounding said casing, but spaced therefrom, and defining a passage opening into the stream of such air,

' whereby additional exterior air is drawn between said casing and said shell, absorbing heat from said casing to maintain said casing against overheating, and joining said stream only when at least partially heated.

10. A recirculating drier comprising: a casing having annularly arranged inlet means through which air'is drawn, and annularly arranged outlet means through which air is expelled, said inlet and outlet annular means being of different sizes and both providing passage for air through and Within the compass of the outer annular means,

said outlet means being disposed exteriorly ofsaid inlet means; a centrifugal fan for drawing a stream of exterior air and at least someof the air as expelled from said outlet inwardly into said casing and said casing being formed to deflect the air emerging from said fan into a stream moving in a direction substantially parallel to the axis of said fan, outwardly and expelling it from said out-let; a heater for heating such air;

and a shell surrounding said casing, but spaced theretrom, and d fining a passage opening into the'strcam 0% such air,- whereby additional exterior air isdrawn between said casing and said shell, absorbing heat irom said casing to maintain said casing against overheating, and joining said stream only when at least partially heated.

11. A recirculating drier comprising: a. casing having annularly, arranged inlet means through which air is drawn, and annularly arranged outlet means through whichair is expelled, said inlet and outlet annular means being O'f diil'erent sizes and both providing passage forair through and within the compass" of the larger annular means, said outlet means being disposed exteriorly of'said inlet means; means carried by said casing including a centrifugal fan for drawing a stream of exterior air and at least some of the air as expelled from said.

outlet inwardly into said casing and said casing heing formed Va or redirecting at. least some of the same air of said stream outwardly in a direction substantially parallel to the axis of said fan and expelling it from said outlet; a heater in said outlet means for heating such air; andashell surrounding said casing, but spaced therefrom, and defining a passage opening into the stream of such air,

whereby additional exterior airis drawn bethrough said auxiliary inlet, over the motor of said circulator to'maintain said motor against overheating, and then into the stream of air drawn in through said inlet; and a heater for heating said air positioned to avoid heating said auxiliary air before said auxiliary 'air has passed'said motor.

13. A drier comprising: a casing having an inlet through whichair is drawn, and an outlet through which air is expelled, said inlet and outlet being arran ed in juxtaposition and said casing also aving an auxiliary inlet; and means carried by said casing and including an electric motor driven doublecentrifuga-l .fan having one part for drawing exterior air inwardly into said casing and expelling itfrom said outlet, and

having the other part for drawing auxiliary air in through said auxiliary inlet,'over the motor of said circulator to maintain said motor against overheating, and then into the 'streamof air drawn in through said inlet; said casing being curved to deflect air emerging from said fan into' a stream moving 1n the direction of the axis of said fan and 'awa from said motor.

-14. A drier, comprising: a casing provided with an inlet and with an outlet and with an auxiliary inlet; an electric-motor driven circulator fordrawing a stream of. air in through said inlet and expelling vsuch air through said outlet, and for drawing auxiliary' air in through said auxiliary inlet,

' 9 over the motor of said circulator to maintain said motor against overheating, and then into the stream 0 surrounding said casing, but spaced there- 77 from, and'opening into said stream, whereby additional air is drawnthrough between said casing and said shell into said stream, absorb.- ing heat from said casing to maintain said casing against overheating, and joining said stream only when at least partially heated.

- expelled from said outlet inwardly into said casing and redirecting at least some of the same air outwardly and expelling it from said outlet, and for drawing auxiliary air in throufgh said auxiliary inlet, over the motor o said circulator to maintain said motor against overheating, and then into the stream of air drawn in through said inlet;

I a heater for heating such air; and a shell surrounding saidcasing but s aced therefrom and defining a passage w ereby, additional air is drawn through between said casing and said shell into said stream, absorbing heat from said casing to maintain said casing against overheating, and joining said stream only when at least partially heated.

16. A recirculating drier comprising: a

casing having an inlet through which air is f drawn, and an outlet through which air is 9 expelled, said inlet and outlet being arranged in juxtaposition and said casing also having an auxiliary inlet; means carried by said casing and includ ng an electr c motor driven I centrifugal fan for drawing a stream of exterior air and at least some of the air as expelled from saidoutlet inwardly into said casing and said casing being'formed to de- ',fl ect the air emerging from saidfan into a stream moving outwardly in-a direction substantially parallel to the axis of said fan and expelling it'from said outlet, and for drawing auxiliary air in through said aux-- iliary' inlet,'over the motor of said circulator to maintain said motor againstoverheating,

and then into the stream of 'air drawn in air drawn in through said inlet aheater for heating said air; and a shell through said casing.

through said inlet; a heater for heating such air; and a shell surroundin said casing but spaced therefrom and de ning a passage whereby additional air is drawn through between'said casing and said shell into said stream, absorbing heat from said casing tomaintain saidcasing' against overheating,

and joining said stream only when at least 1 partially heated.

17. A recirculating drier -C0lI11)!lSlIlg a casin g having annular] y arranged inlet means through which air is drawn, and 'ann'ularly arranged outlet means through which air is expelled, said annularly arranged inlet and outlet formations being juxtaposed and both providing passage for air through and with.-

in the compass of the larger annular means,

said casing alsohaving an auxiliary inlet;

and means carried by said casing and including an electric motor driven circulator 'fordrawing exterior air and at least some of the air as expelled from said outlet means inwardly into said casing and redirecting at least some of the same air outwardly and expelling it from said outlet means, and for drawing auxiliary air in through said am;- iliary, inlet, over the motor of said'circulator to maintain said motor against overheating, and then into the stream of air. circulating 18. A recirculating drier comprising: a casing having annularly arranged inlet means through which airis drawn, and annularly arranged outlet means through which air is expelled, said annularly arranged inlet and outlet formations bein uxtaposed and ofdifferent sizes, and bot passage for air through and within the compass of the larger annular means, said casing also having an auxiliary inlet; and means carried by said casing and including an,elec-' tric motor driven circulator, having sald moproviding a tor located in said auxiliary inlet, for drawing exterior air and atleast some of the air as expelled from said outlet means nwardly into said casing and redirecting at least some of the same airoutwardly and expelling it from said outlet means, and for drawing auxiliary air in through said auxiliary inlet, over the motor of said circulator to maintain saidmotor against overheating, and then into air circulating through said the stream of casing. v i

19. A recirculating drier com rising: a casing having annularly arrange inlet means through which air is'drawn, and annularly arranged outlet means through "which airis expelled, saidannularly arranged inlet and outlet formations being juxtaposed andboth providing passage for air through and within the compass of the larger annular means, said casing also having an auxiliary inlet; and

means carried by said casing and including part fori'drawing exterior air and at least an electric motor driven circulator. having one a ling it from said outlet means, and another part for drawing auxiliary air in through said auxiliary lnlet, over the motor of said circulator to maintain .said motor against overheating, and then into the stream of air 1o circulating through said casing.

. 20. A portable unitary recirculating drying apparatus, comprising: an open-front casing,- a hood carried at the front of said casing for at least partially embracing the head of the person whose hair is to be dried,

said hood being provided with centrally-disposed inlet means for admittingair over said head and into said casing, and with outwardly-lying outlet means for permitting the same air to escape therefrom'onto said head; heating means within said c sin g for heating said air; and a fan within said casing for drawing air over said head into said casing through said inlet means in a centrally disposed stream, doubling the same air back uponitself within said casing and into a substantially annular stream surrounding said inwardly flowing stream, and expelling said air from said outlet means in a zone surrounding said head and" in proximity to said inwardly flowing stream; said apparatus comprising means whereby some of the .air of said outlet stream is entrained by and joins said inwardly flowing stream and is recirculated through said casing, thus to decreasethe heat required to maintain at a desired tem-- perature the airexpelled through said outlet means.

21. A portable unitary recirculating dry- 40 ing apparatus, comprising: an open-front casing, having its open-front face concave.

to form a hood for at least partially embracing the head of the person whose hair'is to be dried, saidface being provided 'With inwardly disposed inlet means for admitting air over said head and into said casing, and 'wlth outlet means disposed radially outward of said inlet means for permittingthe same air to escape therefrom onto said head; heatmg means d sposed within said caslng forheating said stream of air; and a fan dispos'ed within said casing generally in axial aline ment therewlth and with said inlet means, for drawmg air head through sai inlet means in a substantially centrally disposed inlet stream, dou-' bling the same airback upon itself within said casing and into a substantially annular stream surrounding said inlet stream, and expellingsaid air from said casing and into said hood through'said outlet means in a zone surrounding said head and in proximity to said inlet stream; said apparatus comprising means whereby at least some of the air of 5 said annular stream is entrained by and joins jnto'said casing over said said inlet stream and is recirculated throughsaid casing,.thus to decrease the amount of heat required tomaintain at a desired tem perature the ail-expelled through said outlet means.

22. A unitary drier, comprising: a dirigible casingw having a mouth portion adapted to i be directed toward a subject to be treated, and having inlet means and outlet means in said mouth port-ion juxtaposed and fixed with reference to each other and with reference to said casing, said inlet means being disposed centrally of said mouth tion of said casing and operable to deflect air in an annular stream toward said outlet means; a fan substantially within sald casing, and disposedrearwardly of and spaced from said mouth portion of said casing, and

adjacent to and within and cooperable with said deflecting means, said :fan being rotatable about an axis generally parallel to the axis of said casing;- and electrical heating means carried within said casing, for heating such air; said fan operating to draw air centrally inwardly through said inlet means into the interior of said casing,fand to throw off such air into contact with said annular deflecting means, to redirect such air from within said casing in an annular stream surrounding the incoming air, and to discharge such air from said outlet means onto the subject; said drier comprising means whereby at least some of the air discharged through said outlet meansis drawn back through said inlet means, thus toeflect recirculation, and to minimize influx of relatively cold exterior air, to reduce the amount of heat required to maintain the air discharged from said outlet means at the temperature desired.

23. Apparatus, as of the type described, for subjecting a person to the action-of a stream of treated gaseous-like fluid, comprising: an open-front casing. including fluid-directing means, and having its mouth formed to be directed toward and partiallyreceivdthe sub ect to be treated, said mouth having anyinlet fluid circulated by said apparatus; means forpreventing accidental contact of said subject with said treating means; and fluid-circulating means within said casing; said fiuid-circulating means and said fluid-directing means operating together to indraw through said inlet area aninflowin stream of fluid, and to double back said fluid upon itself and expel said fluid through said outlet area, and said apparatus comprising means whereby said fluid is expelled about said subject, and in proximityito said inflowing stream, to be in part entrained in said vinflowlng stream,

' whereby part of said fluid is recirculated, to

reduce the. amount of treatment required to maintain said fluid at desired condition. 24. Apparatus, as of the type described, for

of treated gaseous-like fluid, comprising: an open-front casing, including fluid-directing means,and having-its mouth formed be directedtoward and partially 'rec'ei the subject to be treated, said mouth h ving an inlet area and' an outlet area, an said outlet.

area embracing said inlet area; treating means, opera-t1ng'.-w1th1n said 0 s1ng,.for

treating the fluid circulated by said apparatus; means for preventing accidental contact of said subject with said treating means; and

fluid-circulating means within said casing; said' fluid-circulating means and-said flu1d-' directing means operating together to indraw of fluid, andto expel said fluid through said outlet area, and said apparatus comprising means. whereby said fluid is expelled about said subject and in proximity to said inflow-- ing stream, to be in part-entrained in said inflowing stream, whereby part of saidfluid is recirculated, to reduce the amount of treatment required to maintain said fluid at desired condition. j i

. 25. Apparatus, as of, the type described, for subjecting a person to the action of a stream of treated gaseous-like fluid, comprising: an

open-front casing, including fluid-directing means, and having its mouth formed to be directed toward and partially receive the subject to be treated, said mouth having an inlet area and an outlet area,and said outlet area embracing said inlet area; treating means,

operating within said casing, for treating the fluid circulatedby said apparatus; means'for preventing accidental contactof said subject upon itself as an outflowingstrea-in embrac-.

with said treating means; and fluid-circulating means within said casing; said fluid-circulating means and said fluid-directing means operating together to indraw through said in- I let area a centrally disposed inflowing stream of fluid, to double back said fluid 26. Apparatus, as of the type described,

for sub ecting a person to the action of a stream of treated gaseous-like fluid, comprising: a unitary open-front casing, in--' cluding fluid-directing means, andhaving its mouth formed to be directed toward and partially receive the subject to het-reated, said mouth having an inlet area and an out-le't area, and said outlet area embracing said in-- let area; treating means, operating within said casing, for treating the fluid circulated by said apparatus; means for preventing 'accidental contact of said sub ect with saidv treating means; and a'centrifugal fan within said casing; said Tan operatin to indraw through said inlet area a centra ly disposed inflowing stream of fluid, and to expel'said.

fluid substantially atright angles to the direction of flow of said inflowing stream, and said'fluid-directing means operatin to turn said fluid. additionally, to form said fluid as an outflowing streamembracin said inflowing stream, and to expel said ll said outlet area, and said apparatus comprising-means whereby said fluid is expelled about said subject, and in proximity to said inflowing stream, to be in part entrained in said inflowing. stream, .wh'ereby part of said fluid is recirculated, to reduce the amount of treatment required to maintain said fluid at desired condition. v

uid through 27. Apparatus, as of the type described, I

for subjecting a person to the action ,of'a

stream of treated gaseous-like fluid, com.- prising: a unitary open-front casing, including fluid-directing means, and having its mouth formed to be directed toward and partially receive the subject to be treated, said mouth having an inlet area and an outlet area, and said outlet area embracing said in-,

let area; treating means, operating within saidcasing, :for treating the fluid circulated by said apparatus; means for preventing ac-- cidental contact of said subject with said treating means; and a centrifugal fan within said casing; said fa'noperatingito indraw through said inlet area an inflowing stream of fluid, and to expel said fluid substantially at right angles to the direction of flow of said inflowing stream, and said fluid-directing means operatingto turn said fluid addition ally, to discharge said flui'd through said outlet area, and said apparatus comprising" means whereby said fluid is expelled about said subject, and in proximity to said inflowing stream, to be in part entrained in said in- I ing saidj inflowing stream, and; to expel said-y flowing stream, whereby part of said fluid is fluid through said outlet area, and said apparatus comprising means whereby said fluid is expelled about said sub ect, and in proximity to said inflowing stream, to be in part. entrained j in said inflowing .stream,

I whereby part of said fluid is recirculated, to

reduce the amount of treatment required to maintain said fluid atdesired condition.

stream of vapor-carrying gaseous-like fluid,

com rising: an openfront casing, including fluic -d1rect1ngmeans, and having its mouth for subjectinga person to theaction of a I insertedto-maintain said 50 dition.

withsaid vapor-injecting means; and fluid-v ClICLlliltlllg means wlthin said cas ng; saidv fluid-circulating means and said fluid-directing means operating together to indraw through said inlet area an inflowing stream of fluid, and to double back'said fluid upon itself and expel said fluid through said outlet area, and said apparatus comprising means whereby saidfluid is expelledabout'said subject, and in proximity to said nflowing stream, to be in part entrained in said inflowing stream, whereby part of said fluid is recirculated, to reduce the amount of vafpor required to be inserted to maintain said uid at desired condition.

' 29. Apparatus, as of the type described, for

2 subjecting a person to the action of a stream of vapor-carrying gaseous-like fluid, comprising: an open-front'casing, including fluiddirecting means, and having its mouth formed to be directed toward and partially receive the subject to be treated, said mouth having an inlet area and an outlet area, and said outlet area emhracmg said inlet area vapor injecting means, operating within said caslng,

for inserting vapor into the fluid circulated by said apparatus; means for preventing accidental contact of said subject with said vapor-injecting means; and fluid-circulating means within said casing; said fluid-circulating means and said fluld-dlrectmg means 4 operating together to indraw through said inlet area an inflowing stream Offlllld, and to expel said. fluid through said' outlet area, and said apparatus comprising means whereby said fluid is expelled about said subject,

and in proximity to said inflowing stream, to

be in part entrained in said inflowing stream, whereby part of said fluid is recirculated, to reduce the amount of-valpor required to be uid at desired con- 30. Apparatus, as of the type described, for subjecting a person tothe action of 'a stream of heated gaseous-like fluid, compris 111g: an open-front casing, lncludmg fluid directing means, and having its mouth formed to be directed toward and partially receive the subject to be treated, said 'mouth having an inlet area and an outlet area, and said outlet area embracing said inlet area; an electric heater, operating within said casing, for

heating the fluid circulated by said apparatus; means for, preventing accidental contact oisa'id subject with said heater; and fluidcirculatingm'eans within said casing; said fluid-circulating means and said flu1d-direct-' the fluid circulate -ing means operating together to indraw through said inlet area an inflowing stream offlu'id, and to double back said fluid upon itself and expel said fluid through said outlet area, and said apparatus comprising means whereby said fluid is expelled about said subject, and in proximity to said inflowing stream, to be in part entrained in said inflowing stream, whereby part of said "fluid is recirculated, to reduce the amount of heat required .to maintain said fluid at desired temperature.

31.'Appa ratus, as of the type described,-' for subjecting a person to the action of a' stream of heated gaseous-like fluid, com rising: an open-front casing, including uiddirecting means, and having its mouth formed to be directed toward and partially receive the subject to be treated, said mouth having ing means operating together to indraw through said inlet area an .inflowing stream of fluid, and to expel said fluid through said outlet area, and said apparatus comprising means whereby said fluid is expelled about said subject, ing stream, to bein part entrained in said inflowing stream, whereby part of'said fluid is recirculated, to reduce the amount of heat required to maintain said fluid at desiredtemperature.

32. Apparatus, as of the type described, for sub ecting a person to the action of a stream of heated vapor-carrying gaseouslike fluid, comprising: an open-front casing, including fluid directing means, and having. its mouth formed to be directed toward and partially receive the su'bjectto be-treated, said mouth having an inlet area and an out let area, and said outlet area embracing said inlet area; vapor'inject'ng means, operating within said casing, for insertingva-por into dfby said apparatus; an electric heater, for heating the fluid circulated by said apparatus; vmeans for contact of said subject with said vapor-injecting means and said heater; and fluidcirculating means within said casing; said fluid-circulating means and said fluid-directmg means operating together to indraw through said inletarea an inflowingstream of fluid, and to double back said fluid upon itself and to expel said fluid throughsaid outlet area, and ,sai d apparatus comprising preventing accidentaland in proximity to said inflow '115, operating within said casing,

means whereby said fluid is expelledabout said subject, and in proximity to said inflowing stream, to be in part entrained in said inflowing stream, whereby part of said fluid sis recirculated, to reduce the amount of vapor and heat required to maintain said fluid at desired condition and temperature.

33. Apparatus, as of the-type described,

for subjecting a person to the action of a stream of heated vapor-carrying gaseous-like fluid, comprising: an open-front casing, in?

cluding fluid-directing means, and having its mouth formed to be directed towardand partially receive the subject to be treated, said mouth having an inlet area and an outlet area, and said outlet area embracing said inlet area; vapor injecting means, operating within said casing, for inserting vapor into the fluid circulated by said apparatus; an

electric heater, operating within said casing, for Heating the fluid circulated by said apparatus; means for preventing accidental contact of said subject with said vapor-injects ing means and said heater; and fluid-circulating means within said casing; said fiuidcirculating means and said fluid-directing means operating together to indraw through 4 said inlet areaan inflowing stream of fluid,-

and to expel said fluid through said outlet area, and said apparatus comprising means wl:ereby said fluid is expelled about said subject, and in proximity to said inflowing stream, to be in partentrained in said inflowing stream, whereby part of said fluid is recirculated-to reduce the amount of vapor and heat required to maintain said fluid at desired condition and temperature.

34. A portable unitary recirculating treating apparatus, comprising: an open-front "casing; a hood carried at the front of said a casing for at least partially embracingl the part of the person to be treated, said ood being provided with centrally-disposed inlet means for admitting fluid over said part and into said casing, and with outwardly-lying outlet means for permittingthe same fluid to escape therefrom onto said art; treatin means within said casing or treating said fluid; and a fan within said casing for drawing said fluid over said vpart into said casing through said inlet means in a centrally disposed stream, doubling the same fluid back upon itself within said casing and into a substantially annular stream surrounding said inwardly flowing stream, and

expelling said fluid from said outlet means in a zone surrounding said part and in proximity to said inwardly flowing stream;

said apparatus comprising means whereby some of thefluid of said outlet stream is entrained by and joins said inwardly flowing stream and is recirculated through said casing," thus to decrease the treatment required to maintain at a desired condition the fluid expelled through said outlet means.

' 35. A portable unitary recirculating treatingiap aratus, comprising: an open-front casing, aving its open fr'out face concave-to form a hood "for at least artially embracing"- the part of the person to treated, said face being provided with inwardly disposed inlet means for admitting fluid over said part and into said casing, and with outlet means disposed radially outward of said inlet means forpermitting the same fluid to escape there- 7 from onto said part; treating means disposed within said casing for treating said stream of fluid; and a fan disposed within said cas-, ing generally in axial-alinement therewith and with said inlet means, for drawing fluid into said casing over said part through said stream and is recirculatedthrough said was ing, thus to decrease the amount of treatment required to maintain. at a desired condition the fluid expelled through saidoutlet means.

36. A unitary treatin apparatus, comprising: a dirigible casing aving a mouth por-' tion adapted to be directed toward a subject to be treated, and having inlet means and outand fixed with reference to each other and with reference to said casing, said inlet means being disposed centrallyof said mouth portion, and interiorly of said outlet means, and each of said inlet means and said outlet means opening through the said mouth portion and communicating with the interior of said casin and said outlet means being of a sizeto su tend a substantial portion ofthe subject let means in said mouth portion juxtaposed to be treated, ands'aid mouth portion being formed concave, to .rovide a cavity for the reception of said sub ect, and said casing-also having interiorl disposed annular deflectin means spaced om said mouth portion 0 said casing and operable to deflect fluid in an annular stream toward said outlet means; a fan substantially within said casing, and disposed rearwardly ofand spaced from said mouth portion of said casing, and adjacent to and within and cooperable with said de-, fleeting means, said fan being rotatable about an axis generally parallel to the axis of said casing; and treating means carried within said casing, for treating such fluid; said fan operating to draw fluid centrally inwardly 7 through said inlet means into theinterior of said casing, and to throw off such fluid into contact with said annular deflecting means, to redirect such fluid from within said casing in an annular stream surrounding the incoming fluid, and [to dischargesuch fluid from said outlet means onto the sub ect; said drier means is drawn ack through said inlet 7 si ature. 10

means, thus to efiect recirculation, and to minimize influx of untreated fluid, to reduce the amount of treatment required to maintain the fluid discharged from said outlet means in the condition desired. I

In testimony whereof I hereunto aflix my WENDELL L. ARTIN. 

